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Why use process statement in vhdl?
Almost all programming languages are sequential in nature. But VHDL is a concurrent language. In an architecture for an entity, all statements are concurrent. So where do sequential statements exist in VHDL?. There is a statement called the process statement that contains only sequential statements. The process statement is itself a concurrent statement. A process statement can exist in an architecture and define regions in the architecture where all statements are sequential. A process statement has a declaration section and a statement part. In the declaration section, types, variables, constants, subprograms, and so on can be declared. The statement part contains only sequential statements. Sequential statements consist of CASE statements, IF THEN ELSE statements, LOOP statements, and so on.
What are major differences between data warehousing and a relational database?
Data warehouse databaseDesigned for analysis of business measures by categories and attributesOptimized for bulk loads and large, complex, unpredictable queries that access many rows per table.Loaded with consistent, valid data; requires no real time validationSupports few concurrent users relative to OLTPOLTP databaseDesigned for real time business operations.Optimized for a common set of transactions, usually adding or retrieving a single row at a time per table.Optimized for validation of incoming data during transactions; uses validation data tables.Supports thousands of concurrent users.
What is difference between single threaded servlet and multi threaded servlet?
The single thread model means that your servlet would not be multi-threaded. If there are two concurrent requests to your servlet then 2 instances of your servlet will be created to process these 2 requests. You can implement the single thread model by implementing the SingleThreadModel interface in your class. This is just a marker interface and does not have any methods. The multi threaded model means that your servlet would be multi-threaded and only one instance would exist. Multiple concurrent requests would be served by the same instance but in different threads. You can implement the multi threaded model by not implementing the SingleThreadModel interface in your servlet class.
What difference between data warehouse and traditional database used OLTP?
{| |+ Differences |- | Data warehouse database OLTP database Designed for analysis of business measures by categories and attributes Designed for real time business operations. Optimized for bulk loads and large, complex, unpredictable queries that access many rows per table. Optimized for a common set of transactions, usually adding or retrieving a single row at a time per table. Loaded with consistent, valid data; requires no real time validation Optimized for validation of incoming data during transactions; uses validation data tables. Supports few concurrent users relative to OLTP Supports thousands of concurrent users. |}http://www.geekinterview.com/question_details/15800
What does mean mean in statistics?
Mean is the average.
